/**
 * 序列工具类
 * 
 * add by 吴学文 QQ 928255095
 */
/**
 * @description uuid 序列生成
 * 
 * @return {string} uuid 序列
 */
export function uuid(){
	let s = [];
	let hexDigits = "0123456789abcdef";
	for (let i = 0; i < 36; i++) {
	  s[i] = hexDigits.substr(Math.floor(Math.random() * 0x10), 1);
	}
	s[14] = "4"; // bits 12-15 of the time_hi_and_version field to 0010
	s[19] = hexDigits.substr(s[19] & 0x3 | 0x8, 1); // bits 6-7 of the clock_seq_hi_and_reserved to 01
	s[8] = s[13] = s[18] = s[23] = "-";
	let uuid = s.join("");
	return uuid;
}